Keil is derived from Germanic origins. The name is of the meaning clumsy person. The name Keiler is a variant of Keil. Keil is rarely used as a baby name for boys.
Definition of flapjack for English Language Learners. : a thick, sweet cake made of oatmeal usually with molasses or honey.
It is uncertain as to what the jack in flapjack means, but it is often speculated to refer to the small size of a flapjack as jack was used to refer to something that was smaller than normal.